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Precise Orientational Control of Electroactive Units Using a Tripodal triptycene Scaffold to Direct Noncovalent Pairing at the Single Molecular Level

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Precision Chemistry 2023年第6期1卷 388-394页

作者： Colin J.Martin Tomoya Fukui Ryosuke Takehara Shintaro Fujii Takanori Fukushima Laboratory for Chemistry and Life Science Institute of Innovative ResearchTokyo Institute of TechnologyYokohama 226-8503Japan Department of Chemistry School of ScienceTokyo Institute of TechnologyTokyo 152-8551Japan

A break junction technique has been established to explore conductive behavior at the single molecular level,and recent interest has shifted toward the evaluation of bimolecular systems interacting through noncovalent intermolecular *** requires precise control over the orientation of the two molecules so that they can adapt an appropriate face-to-face arrangement between two ***,we present an approach using a tripodal triptycene scaffold that allows for accurate positioning of electroactive subunits with an upright configuration on substrate *** incorporated electron-donating tetrathiafulvalene or electron-accepting anthraquinone into the molecular scaffold and confirmed that the resulting molecules retain the electronic properties particular to their attached ***-assembled monolayers(SAMs)of these molecules were prepared on Au(111)and characterized by XPS and *** break junction techniques were applied to the SAMs,revealing two electrical conduction regimes;one arises from single-molecules sandwiched between two electrodes,and the second from intermolecularly interacting homodimers that bridge between *** observation demonstrates the validity of the approach of using tripodal triptycene scaffolds to precisely direct electroactive subunits to undergo intermolecular *** believe that the present work will provide a new avenue for evaluating the heterodimers at the single molecular level.

关键词： STM break junction self-assembled monolayers supramolecular scaffold noncovalent interactions triptycene

Spiro-fused bicyclo[3,2,2]octatriene-cored triptycene:synthesis,molecular packing,and functional aggregates

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Science China Chemistry 2021年第11期64卷 1976-1984页

作者： Qing Liu Xian Chen Zhibiao Zhou Tingting Huang Yanpei Wang Sheng Xie Zebing Zeng Ben Zhong Tang State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha410082China Aggregation-Induced Emission(AIE)Institute Guangzhou Development DistrictHuangpuGuangzhou510530China Shenzhen Institute of Aggregate Science and Technology School of Science and EngineeringThe Chinese University of Hong KongShenzhen518172China

Aggregate science has led to the existence of functional properties at the aggregate level that significantly differs from those of corresponding single-molecule species,leading to a number of novel conceptual materials with state-dependent *** developing such materials,new molecular scaffolds that allow modulating the structural and functional properties of aggregates in a controlled manner could be extremely *** this study,we report a class of spiro-fused bicyclo[3,2,2]octatriene triptycene derivatives with a unique 3 D molecular scaffolding structure that displays aggregation-induced emission(AIE)activity with bright solid-state blue *** core scaffold features a Y-shaped bicyclo[3,2,2]octatriene backbone and a vertical crossover arrangement of adjacent spiro-conjugated *** classic bicyclo[2,2,2]octatrienes with high rigidity,this stereoscopic bicyclo[3,2,2]octatriene containing a seven-membered ring allows retaining certain flexibility in the molecular scaffold,which results in a weak fluorescence in dilute solutions(Φ_(F)<10%).However,the corresponding molecular aggregates emit intense fluorescence(Φ_(F)=50%-75%)and show prominent AIE activity because of the restriction of intramolecular scaffold ***,in principle,these stereoscopic scaffold constructions with partially restricted flexibility facilitate the assembly of multiple different crystalline packing structures in both porous and nonporous forms depending on the growth conditions of crystalline *** obtained crystals with regular voids(12.85×6.89Aeach)show reversible luminescence in response to the adsorption/desorption of iodine *** materials based on an unusual 3 D scaffold exhibit a high degree of structural modulation at the aggregate level and demonstrate potential applications in chemical sensing and flexible optoelectronics,which may open up the exploration of highly stereoscopic molecular building blocks for developing functi

关键词： aggregate science triptycene aggregation-induced emission organic porous material

Complexation of triptycene-Derived Macrotricyclic Host Containing Pyridine Groups with Paraquat Derivatives: A Switchable Process Controlled by Zn^(2+) Ions

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Chinese Journal of Chemistry 2014年第8期32卷 721-726页

作者： Ying Han Jiabin Guo Chuanfeng Chen Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and FunctionInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

A triptycene-derived macrotricyclic host containing two pyridine groups was synthesized,and it could form 1∶1 stable host-guest complexes with paraquat derivatives in both solution and solid ***,it was also found tha... 详细信息

关键词： triptycene macrotricyclic host paraquat switchable zinc ions

Complexation of triptycene-Derived Macrotricyclic Host with Bisparaquat Derivative and Self-Folding Guest： A Switchable Process Controlled by K＋ Ions

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Chinese Journal of Chemistry 2013年第5期31卷 607-611页

作者： Ying Han Jiabin Guo Jing Cao Chuanfeng Chen Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and Function Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100049 China

triptycene-derived cylindrical macrotricyclic host with two dibenzo-30-crown-lO cavities could form stable 1 ： 1 complexes with not only polyether linked bisparaquat derivative but also a self-folding A-D-A guest in solu- tion and/or solid state. Moreover, it was found that switchable processes between the host and both the bisparaquat derivative and the self-folding guest could be further controlled by potassium ions.

关键词： complexation macrotricyclic host paraquat triptycene switchable

Ion-Controlled Switchable Complexation of triptycene-Derived Macrotricyclic Host and Self-Folding A-D-A Guest

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Ion-Controlled Switchable Complexation of Triptycene-Derived...

全国第十六届大环化学暨第八届超分子化学学术讨论会

作者： Ying Han Chuan-Feng Chen Institute of Chemistry Chinese Academy of Sciences

＜正＞In host-guest chemistry,a permanent and challenging topic is to develop novel macrocyclic hosts with the capability of binding specific substrate species strongly and ***,we have proved that the tripytcene derivatives could be utilized as useful building blocks for the design and synthesis of novel hosts with specific structures and *** the other hand,the foldamers have attracted much attention,and to our knowledge,no foldamers used as guests in a host-guest system have been hitherto

关键词： Switchable triptycene Macrocyclic host Self-folding

Complexation between triptycene-based macrotricyclic host and π-extended viologens:formation of supramolecular poly[3]pseudorotaxanes

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Complexation between triptycene-based macrotricyclic host an...

全国第十六届大环化学暨第八届超分子化学学术讨论会

作者： Ying Han Ya-Kun Guo Chuan-Feng Chen Institute of Chemistry Chinese Academy of Sciences

＜正＞π-Extended viologens with conjugated structure had much more rich redox *** the applications of π-extended viologens as guests in host-guest chemisrty are still very ***,to our best knowledge,no supramolecular polymers based π-extended viologens have been reported so far. Herein,we report the complexation between triptycene-based macrotricyclic host 13 and π-extended viologens 2 and 3（Fig.1）.It was found that host 1 and guests 2 and 3 could form 1:1 complexes in dilution

关键词： triptycene macrotricyclic host π-extended viologen supramolecular polymer

Self-Assembled Interwoven Cages From triptycene-Based Bis-Macrotricyclic Polyether and Multiple Branched Paraquat-Derived Subunits

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Self-Assembled Interwoven Cages From Triptycene-Based Bis-Ma...

大环化学和超分子化学的新发展——当前学科交叉的一个重要...

作者： GUO Jia-Bin CHEN Chuan-Feng~* (Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China.)

＜正＞Molecular container,now mainly referring to the cage-like superstructures synthesized by the self-assembly of small components,have attracted great interest for not only their aesthetic structures but also their potential applications in *** the last two decades,several novel types of the self-assembled molecular containers including tetrahedral,octahedral,cuboctahedra,dodecahedra,and

关键词： supramolecular cage triptycene self-assembly macrotricyclic polyether paraquat

Supramolecular Polymers From triptycene-Derived Macrotricyclic Host and Secondary Diammonium Ions

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Supramolecular Polymers From Triptycene-Derived Macrotricycl...

大环化学和超分子化学的新发展——当前学科交叉的一个重要...

作者： GUO Jia-Bin CHEN Chuan-Feng~* (Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China.)

＜正＞Currently,supramolecular polymers have attracted great interest due to not only their tunable properties but also their potential applications in materials *** reported supramolecular polymers, considerable examples were based on host-guest complexation,especially pseudorataxane-type *** this regard,crown ether,cyclodextrin and cucurbituril were the most frequently used hosts for the preparation of polymeric pseudorotaxanes.

关键词： supramolecular polymer triptycene self-assembly macrotricyclic host secondary ammonium ion

A FACILE SYNTHESIS OF HYPERBRANCHED POLYIMIDES FROM 2,6,12-TRIAMINOtriptycene

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Chinese Journal of Polymer Science 2010年第1期28卷 69-76页

作者：程琳 Department of Materials Science & Engineering Huaqiao University

Based on monomer 2,6,12-triaminotriptycene, hyperbranched polyimides with high molecular weight modified with different terminal functional groups were obtained by polymerization of A2 ＋ B3 system. The prepared hyperbranched polyimides had good solubility in CHCl3, DMF and THF, and performed no detective Tgs in the range of 50-330℃ and high TdS （5%） above 455℃.

关键词： triptycene Hyperbranched polymer Polyimides.